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  2. GPS tracking unit - Wikipedia

    en.wikipedia.org/wiki/GPS_tracking_unit

    GPS antenna size limits tracker size, often smaller than a half-dollar (diameter 30.61 mm). In 2020 tracking is a $2 billion business plus military-in the gulf war 10% or more targets used trackers. Virtually every cellphone tracks its movements. Tracks can be map displayed in real time, using GPS tracking software and devices with GPS ...

  3. Global Positioning System - Wikipedia

    en.wikipedia.org/wiki/Global_Positioning_System

    GPS receiver manufacturers design GPS receivers to use spectrum beyond the GPS-allocated band. In some cases, GPS receivers are designed to use up to 400 MHz of spectrum in either direction of the L1 frequency of 1575.42 MHz, because mobile satellite services in those regions are broadcasting from space to ground, and at power levels ...

  4. GNSS applications - Wikipedia

    en.wikipedia.org/wiki/GNSS_applications

    A GPS receiver in civilian automobile use. Air navigation systems usually have a moving map display and are often connected to the autopilot for en-route navigation. Cockpit-mounted GNSS receivers and glass cockpits are appearing in general aviation aircraft of all sizes, using technologies such as SBAS or DGPS to increase accuracy.

  5. GPS in the earthmoving industry - Wikipedia

    en.wikipedia.org/wiki/GPS_in_the_Earthmoving...

    The output from the GPS system is interpreted by the machine's electronic control module as a lever command given by the operator and moves the implements accordingly. The second method for integrating GPS in the machine's implement controls is by adding a second pilot hydraulic valve in parallel with the machine's pilot hydraulic valve.

  6. Vibrator (mechanical) - Wikipedia

    en.wikipedia.org/wiki/Vibrator_(mechanical)

    A random vibration test suite may range anywhere from 30 seconds up to several hours. It is intended to synthesize the effect of, for example, a car driving over rough terrain or a rocket taking off. A synthesized shock pulse is a short duration high level vibration calculated as a sum of many half-sine waves covering a range of frequencies.

  7. Satellite navigation device - Wikipedia

    en.wikipedia.org/wiki/Satellite_navigation_device

    Vehicle navigation on a personal navigation assistant Garmin eTrex10 edition handheld. A satellite navigation device or satnav device, also known as a satellite navigation receiver or satnav receiver or simply a GPS device, is a user equipment that uses satellites of the Global Positioning System (GPS) or similar global navigation satellite systems (GNSS).

  8. Electronic tagging - Wikipedia

    en.wikipedia.org/wiki/Electronic_tagging

    An electronic ankle tag. Electronic tagging is a form of surveillance that uses an electronic device affixed to a person.. In some jurisdictions, an electronic tag fitted above the ankle is used for people as part of their bail or probation conditions.

  9. Tracking system - Wikipedia

    en.wikipedia.org/wiki/Tracking_system

    A myriad of tracking systems exist. Some are 'lag time' indicators, that is, the data is collected after an item has passed a point for example, a bar code or choke point or gate. [1] Others are 'real-time' or 'near real-time' like Global Positioning Systems (GPS) depending on how often the data is

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